AT89S2051 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT89S2051

8-bit Microcontroller with 2K/4K Bytes Flash

Atmel Corporation 

Table 7-1. AT89S2051/S4051 SFR Map and Reset Values

0F8H

0F0H

B

00000000

0E8H

0E0H

ACC

00000000

0D8H

0D0H

0C8H

PSW

00000000

0C0H

0B8H

0B0H

0A8H

0A0H

IP

X0X00000

P3

11111111

IE

00X00000

SADEN

00000000

SADDR

00000000

98H

SCON

00000000

90H

P1

11111111

88H

TCON

00000000

80H

SBUF

XXXXXXXX

TMOD

00000000

SP

00000111

TL0

00000000

DPL

00000000

TL1

00000000

DPH

00000000

TH0

00000000

TH1

00000000

0FFH

0F7H

0EFH

0E7H

0DFH

0D7H

0CFH

0C7H

0BFH

IPH

X0X00000

0B7H

0AFH

0A7H

9FH

ACSR

XXX00000

97H

CLKREG

XXXXXX0X

8FH

PCON

000X0000

87H

6 AT89S2051/S4051

3390C–MICRO–7/05

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